CN212720280U

CN212720280U - Civil methanol boiler

Info

Publication number: CN212720280U
Application number: CN202021157074.3U
Authority: CN
Inventors: 杨广会; 杨文圣; 赵帅; 杨文利; 李亚军
Original assignee: Chengde Clean Composite Fuel Plant
Current assignee: Chengde Clean Composite Fuel Plant
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-03-16
Anticipated expiration: 2030-06-19

Abstract

The utility model provides a civil methanol boiler, which comprises an outer water jacket, an inner water jacket, a burner and an external converter; the outer water jacket is of a double-layer cylindrical closed structure, the bottom of the outer water jacket is provided with a water inlet used for being connected with a heating pipeline, and the top of the outer water jacket is provided with a water outlet used for being connected with the heating pipeline; the inner water jacket is arranged in a cavity enclosed by the peripheral wall of the inner barrel of the outer water jacket and is communicated with the outer water jacket through a pipeline; a first heat conduction chamber filled with heat conduction oil is arranged in the inner water jacket; a flue for passing flue gas is arranged between the inner water jacket and the outer water jacket, and a flue gas collecting assembly is arranged at the top end of the flue; the combustor is arranged in the cavity and is positioned below the inner water jacket; a conversion chamber for containing liquid methanol is arranged in the external converter, an electric heating pipe and an auxiliary heating pipe are arranged in the conversion chamber, one end of the auxiliary heating pipe is connected with the flue gas collecting component, and the other end of the auxiliary heating pipe extends out of the external converter for discharging flue gas; the conversion chamber is also provided with an exhaust pipe which is connected with a fuel pipe of the burner.

Description

Civil methanol boiler

Technical Field

The utility model belongs to the technical field of the boiler, more specifically say, relate to a civil methanol boiler.

Background

At present, natural gas is not popularized in part of rural areas yet, water heating boiler heating is still adopted, in order to respond to national energy-saving and environment-friendly policies, a boiler using methanol to replace coal as fuel appears, but because methanol is liquid in a normal-temperature environment, if the methanol is directly combusted, sufficient combustion cannot be guaranteed, liquid methanol needs to be converted into a gas state through a heating mode before combustion, the methanol heating common method adopts an electric heating pipe, and the electric heating pipe is required to continuously operate and heat at high power, so that the power consumption is very large, the operation cost of the boiler is high, and the development of the methanol fuel boiler is restricted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a civil methanol boiler, aim at solving the problem that prior art's methanol boiler power consumption is big, the running cost is high.

In order to achieve the above object, the utility model adopts the following technical scheme: the civil methanol boiler comprises an outer water jacket, an inner water jacket, a burner and an external converter; the outer water jacket is of a double-layer cylindrical closed structure, the bottom of the outer water jacket is provided with a water inlet used for being connected with a heating pipeline, and the top of the outer water jacket is provided with a water outlet used for being connected with the heating pipeline; the inner water jacket is arranged in a cavity enclosed by the peripheral wall of the inner barrel of the outer water jacket and is communicated with the outer water jacket through a pipeline; a first heat conduction chamber filled with heat conduction oil is arranged in the inner water jacket; a flue for passing flue gas is arranged between the inner water jacket and the outer water jacket, and a flue gas collecting assembly is arranged at the top end of the flue; the combustor is arranged in the cavity and is positioned below the inner water jacket; a conversion chamber for containing liquid methanol is arranged in the external converter, an electric heating pipe and an auxiliary heating pipe are arranged in the conversion chamber, one end of the auxiliary heating pipe is connected with the flue gas collecting component, and the other end of the auxiliary heating pipe extends out of the external converter for discharging flue gas; the conversion chamber is also provided with an exhaust pipe which is connected with a fuel pipe of the burner.

As another embodiment of the present application, the inner water jacket includes an upper water cavity and a lower water cavity which are arranged up and down and respectively communicated with the outer water jacket, and a second heat conduction chamber filled with heat conduction oil is arranged at the periphery of the lower water cavity; the first heat conduction chamber comprises an upper heat conduction cavity and a lower heat conduction cavity, the upper heat conduction cavity is located in the upper water cavity, the lower heat conduction cavity is located in the lower water cavity, and the lower heat conduction cavity is communicated with the upper heat conduction cavity through a pipeline.

As another embodiment of the application, the side wall of the top of the lower water cavity is provided with at least two convection pipes, and the lower water cavity and the outer water jacket are respectively communicated through the at least two convection pipes; the bottom of the upper water cavity is provided with a water inlet pipe communicated with the outer water jacket, and the top of the upper water cavity is provided with a water outlet pipe communicated with the outer water jacket.

As another embodiment of the present application, the lower heat conducting cavity is a convex structure, and the bottom of the lower heat conducting cavity is attached to the bottom of the lower water cavity.

As another embodiment of the application, the smoke collection assembly comprises an umbrella-shaped cover plate and a smoke pipeline; wherein, the umbrella-shaped cover plate is covered on the top end of the flue, and the top end is provided with an air hole; one end of the flue gas pipeline is connected with the air hole, and the other end of the flue gas pipeline is connected with the auxiliary heating pipe.

As another embodiment of this application, the last circulated air pump that is equipped with of flue gas pipeline.

As another embodiment of this application, be equipped with the fan in the external converter, the air exit of fan is connected with the air-out pipeline, and the air outlet of air-out pipeline aligns with the burner port of combustor.

As another embodiment of the application, a liquid level probe is connected to the conversion chamber, and a detection end of the liquid level probe penetrates through the top wall of the conversion chamber and extends into the conversion chamber.

In another embodiment of the present application, the transfer chamber is further connected to a fuel pump for pumping fuel from the methanol storage tank into the transfer chamber.

As another embodiment of the application, the top of the conversion chamber is provided with a safety valve communicated with the interior of the conversion chamber, and the exhaust pipe is provided with a stop valve in series.

The utility model provides a pair of civil methanol boiler's beneficial effect lies in: compared with the prior art, the utility model relates to a civilian methanol boiler, gaseous state methyl alcohol that generates through external converter gets into the combustor can the intensive combustion, heat internal water jacket, the water inlet fills the low temperature water in the outer water jacket and carries out the convection heat transfer with the high temperature water in the inner water jacket, thereby make delivery port exhaust hot water, the flue in-process between flue process inner water jacket and the outer water jacket of flue gas process that the burning produced, can carry out the auxiliary heating to the liquid methyl alcohol in the internal water jacket and the outer water jacket, make full use of combustion heat, improve heating efficiency, let in the auxiliary heating pipe through the flue gas collection subassembly behind the flue gas exhaust flue, thereby improve external converter's methyl alcohol conversion efficiency, can reduce electric heating pipe's consumption, thereby reduce methyl alcohol gasification power consumption, practice thrift the running cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a civil methanol boiler provided by an embodiment of the present invention.

In the figure: 1. an outer water jacket; 11. a water inlet; 12. a water outlet; 2. an inner water jacket; 21. a lower water chamber; 211. A convection tube; 22. an upper water chamber; 221. a water inlet pipe; 222. a water outlet pipe; 3. a flue; 30. a flue gas collection assembly; 31. an umbrella-shaped cover plate; 32. a flue gas duct; 33. a circulating air pump; 4. a first heat transfer chamber; 41. A lower heat conducting cavity; 42. an upper heat conducting cavity; 5. a second heat transfer chamber; 6. a burner; 7. an external converter; 70. a conversion chamber; 701. an electric heating tube; 702. an auxiliary heating pipe; 703. a liquid level probe; 704. a safety valve; 71. an exhaust pipe; 711. a stop valve; 72. a fan; 720. an air outlet pipeline; 73. a fuel pump.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a methanol boiler for civil use according to the present invention will now be described. The civil methanol boiler comprises an outer water jacket 1, an inner water jacket 2, a burner 6 and an external converter 7; the outer water jacket 1 is of a double-layer cylindrical closed structure, the bottom of the outer water jacket is provided with a water inlet 11 used for being connected with a heating pipeline, and the top of the outer water jacket is provided with a water outlet 12 used for being connected with the heating pipeline; the inner water jacket 2 is arranged in a cavity surrounded by the inner cylinder peripheral wall of the outer water jacket 1 and is communicated with the outer water jacket 1 through a pipeline; a first heat conduction chamber 4 filled with heat conduction oil is arranged in the inner water jacket 2; a flue 3 for passing flue gas is arranged between the inner water jacket 2 and the outer water jacket 1, and a flue gas collecting assembly 30 is arranged at the top end of the flue 3; the burner 6 is arranged in the cavity and is positioned below the inner water jacket 2; a conversion chamber 70 for containing liquid methanol is arranged in the external converter 7, an electric heating pipe 701 and an auxiliary heating pipe 702 are arranged in the conversion chamber 70, one end of the auxiliary heating pipe 702 is connected with the flue gas collecting component 30, and the other end of the auxiliary heating pipe extends out of the external converter 7 for discharging flue gas; the conversion chamber 70 is further provided with an exhaust pipe 71, and the exhaust pipe 71 is connected to a fuel pipe of the burner 6.

After the heating pipe is connected, water flows between the heating pipe and the boiler in a circulating manner, the water flowing into the outer water jacket 1 from the water inlet 11 is low-temperature water after heat dissipation through the heating pipe, and the water flowing out from the water outlet 12 is high-temperature water after heating through the boiler.

The utility model provides a pair of civil methanol boiler's working process: before the burner 6 is started, firstly, the heating pipeline, the outer water jacket 1 and the inner water jacket 2 are fully filled with water, if the water quantity is insufficient, water is supplemented in advance, after the water quantity is sufficient, the electric heating pipe 701 is started to heat the liquid methanol in the conversion chamber 70, the liquid methanol is heated, boiled and gasified, then the liquid methanol is introduced into a fuel pipe of the burner 6 through the exhaust pipe 71, then the gaseous methanol sprayed from the fuel pipe is ignited and combusted through an igniter of the burner 6, so that the inner water jacket 2 is directly heated, and because the first heat conduction chamber 4 positioned in the inner water jacket 2 is filled with heat conduction oil, the heat conduction oil is heated quickly, so that the heating process of the inner water jacket 2 is double heating, namely, the direct combustion heating of the burner 6 and the heat transfer heating of the first heat conduction chamber 4 are carried out, so that the normal temperature;

because the inner water jacket 2 is directly heated, the water temperature in the inner water jacket 2 is higher than that in the outer water jacket 1, by utilizing the heat convection principle, the high-temperature water in the inner water jacket 2 and the low-temperature water in the outer water jacket 1 carry out heat convection at a communicated pipeline, namely the high-temperature water in the inner water jacket 2 is discharged into the outer water jacket 1, the low-temperature water in the outer water jacket 1 enters the inner water jacket 2, so that the water temperature in the outer water jacket 1 is gradually increased, and the high-temperature water flows into a heating pipeline through a water outlet 12 at the top of the outer water jacket 1 under the heat convection principle;

in addition, in the process that high-temperature flue gas generated in the combustion process passes through the flue 3, the side walls of the outer water jacket 1 and the inner water jacket 2 can be heated, so that the inner water jacket 2 and the outer water jacket 1 are heated in an auxiliary manner, the combustion heat can be fully utilized, and the heating efficiency and the heat conversion rate are improved; the high-temperature flue gas passes through the flue 3 and then is discharged into the flue gas collection assembly 30, and then enters the auxiliary heating pipe 702, and the liquid methanol in the conversion chamber 70 is subjected to auxiliary heating through the auxiliary heating pipe 702.

Compared with the prior art, the civil methanol boiler provided by the utility model has the advantages that the gaseous methanol generated by the external converter 7 enters the combustor 6 to be fully combusted, the inner water jacket 2 is heated, the low-temperature water filled in the outer water jacket 1 from the water inlet 11 and the high-temperature water in the inner water jacket 2 carry out heat convection, so that hot water is discharged from the water outlet 12, and in the process that flue gas generated by combustion passes through the flue 3 between the inner water jacket 2 and the outer water jacket 1, can carry out auxiliary heating on water in the inner water jacket 2 and the outer water jacket 1, fully utilizes combustion heat, improves heating efficiency, leads flue gas into the auxiliary heating pipe 702 through the flue gas collecting component 30 after being discharged out of the flue 3 to carry out auxiliary heating on liquid methanol, therefore, the methanol conversion efficiency of the external converter 7 is improved, the power consumption of the electric heating pipe 701 can be reduced, the power consumption of methanol gasification is reduced, and the operation cost is saved.

As a specific embodiment of the civil methanol boiler provided by the present invention, please refer to fig. 1, the inner water jacket 2 includes an upper water chamber 22 and a lower water chamber 21 which are arranged up and down and respectively communicated with the outer water jacket 1, and the periphery of the lower water chamber 21 is provided with a second heat conduction chamber 5 filled with heat conduction oil; the first heat conduction chamber 4 includes an upper heat conduction chamber 42 located in the upper water chamber 22 and a lower heat conduction chamber 41 located in the lower water chamber 21, and the lower heat conduction chamber 41 and the upper heat conduction chamber 42 are communicated through a pipeline.

The lower water cavity 21 carries out heat transfer heating through the lower heat conduction cavity 41 inside and the second heat conduction chamber 5 at the periphery together, and the water temperature in the lower water cavity 21 can be quickly raised by utilizing the high heat conductivity of the heat conduction oil; because rivers are the circulation flow state, and rivers are faster in the circulation speed of heating in the pipeline, the better the heating effect, and low temperature water need pass through sufficient heating time and just can ensure its intensification, consequently, low temperature water gets into and carries out once heat convection heat transfer with the high temperature water in lower part water cavity 21 behind the outer water jacket 1 at first, then gets into upper portion water cavity 22 and carries out the secondary heat transfer intensification, the route of rivers passing through between water inlet 11 and delivery port 12 has been prolonged, thereby the heating time has been increased, the heating effect is good, the rivers temperature risees.

In this embodiment, please refer to fig. 1, at least two convection pipes 211 are disposed on the top side wall of the lower water cavity 21, and the lower water cavity 21 and the outer water jacket 1 are respectively communicated with each other through the at least two convection pipes 211; the bottom of the upper water cavity 22 is provided with a water inlet pipe 221 communicated with the outer water jacket 1, and the top is provided with a water outlet pipe 222 communicated with the outer water jacket 1. The lower water cavity 21 is communicated with the outer water jacket 1 through at least two convection pipes 211, so that the heat convection speed of water flow inside the lower water cavity and the outer water jacket 1 is improved, low-temperature water enters the upper water cavity 22 through a bottom water inlet pipe 221, hot water rises after being heated by the upper heat conduction cavity 42, enters the outer water jacket 1 through a top water outlet pipe 222, and then enters a heating pipeline through a water outlet 12, so that the heating efficiency is high.

Specifically, referring to fig. 1, the lower heat conducting cavity 41 has a convex structure, and the bottom of the lower heat conducting cavity is attached to the bottom of the lower water cavity 21. The lower part of the convex structure has a large heating area, and the temperature rise speed of the heat conduction oil in the lower heat conduction cavity 41 is high, so that the temperature rise speed of the lower water cavity 21 is increased, and the overall heating efficiency is improved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the smoke collection assembly 30 includes an umbrella-shaped cover plate 31 and a smoke pipeline 32; wherein, the umbrella-shaped cover plate 31 is covered on the top end of the flue 3, and the top end is provided with an air hole; one end of the flue gas duct 32 is connected to the air holes, and the other end is connected to the auxiliary heating pipe 702. High temperature flue gas gets into umbrella type cover plate 31 coverage after the top of flue 3 is discharged to assemble in umbrella type cover plate 31's top (steam rises), get into flue gas pipeline 32, and then heat liquid methyl alcohol through auxiliary heating pipe 702, make full use of combustion heat carries out the methyl alcohol heating, thereby reduces electric heating pipe 701's consumption.

Specifically, referring to fig. 1, a circulating air pump 33 is connected in series to the flue gas pipe 32. The high-temperature flue gas collected by the umbrella-shaped cover plate 31 is pumped by the circulating air pump 33, so that the phenomenon that the high-temperature flue gas cannot completely enter the auxiliary heating pipe 702 due to insufficient free flow power to cause heat loss is avoided, the circulation speed of the high-temperature flue gas can be increased, the heat conversion rate is increased, the heating efficiency of liquid methanol is high, the power consumption of the electric heating pipe 701 can be further reduced, and the operation cost is saved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a fan 72 is disposed in the external converter 7, an air outlet of the fan 72 is connected to an air outlet pipeline 720, and an air outlet of the air outlet pipeline 720 is aligned with a combustion port of the combustor 6. Blow the burner port of combustor 6 through fan 72, can provide sufficient air on the one hand, ensure that gaseous state methyl alcohol burning is abundant, improve the heat value of burning of gaseous state methyl alcohol, on the other hand can make burning flame all spout the bottom to interior water jacket 2, and burning heat utilization rate is high, and heating effect is good.

Referring to fig. 1, a liquid level probe 703 is connected to the converting chamber 70, and a detecting end of the liquid level probe 703 passes through a top wall of the converting chamber 70 and extends into the converting chamber 70. The liquid level of the liquid methanol in the conversion chamber 70 can be detected by the liquid level probe 703, so that the liquid methanol can be added into the conversion chamber 70 in time when the fuel (liquid methanol) is insufficient.

Specifically, referring to fig. 1, the switching chamber 70 is further connected to a fuel pump 73, and the fuel pump 73 is used for pumping fuel from the methanol storage tank into the switching chamber 70. When the liquid level in the conversion chamber 70 is low, in order to avoid insufficient gas supply to the combustor 6 caused by the reduction of methanol gasification efficiency, liquid methanol is added into the conversion chamber 70 in time by starting the fuel pump 73, so as to ensure the continuous and normal operation of the equipment.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a safety valve 704 is disposed at the top of the conversion chamber 70 and communicated with the interior thereof, and a stop valve 711 is disposed on the exhaust pipe 71 in series. Because the air pressure in the conversion chamber 70 rises after the methanol is gasified, in order to avoid explosion accidents caused by overhigh air pressure, a safety valve 704 is arranged at the top of the conversion chamber 70, and the safety valve 704 is automatically opened to release the pressure when the air pressure in the conversion chamber 70 reaches a rated value, so that the operation safety is ensured; in addition, the shutoff valve 711 needs to be closed after the operation of the burner 6 is stopped, so as to prevent the gaseous methanol remaining in the shift chamber 70 from flowing from the exhaust pipe 71 to the burner 6 and leaking.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A methanol boiler for civil use, comprising:

the water jacket is of a double-layer cylindrical closed structure, the bottom of the water jacket is provided with a water inlet used for being connected with a heating pipeline, and the top of the water jacket is provided with a water outlet used for being connected with the heating pipeline;

the inner water jacket is arranged in a cavity enclosed by the peripheral wall of the inner barrel of the outer water jacket and is communicated with the outer water jacket through a pipeline; a first heat conduction chamber filled with heat conduction oil is arranged in the inner water jacket; a flue for passing flue gas is arranged between the inner water jacket and the outer water jacket, and a flue gas collecting assembly is arranged at the top end of the flue;

the combustor is arranged in the cavity and is positioned below the inner water jacket;

the external converter is internally provided with a conversion chamber for containing liquid methanol, an electric heating pipe and an auxiliary heating pipe are arranged in the conversion chamber, one end of the auxiliary heating pipe is connected with the flue gas collecting component, and the other end of the auxiliary heating pipe extends out of the external converter for discharging flue gas; the conversion chamber is also provided with an exhaust pipe, and the exhaust pipe is connected with a fuel pipe of the combustor.

2. The domestic methanol boiler of claim 1, wherein: the inner water jacket comprises an upper water cavity and a lower water cavity which are arranged up and down and are respectively communicated with the outer water jacket, and a second heat conduction chamber filled with heat conduction oil is arranged at the periphery of the lower water cavity; the first heat conduction chamber comprises an upper heat conduction cavity and a lower heat conduction cavity, the upper heat conduction cavity is located in the upper water cavity, the lower heat conduction cavity is located in the lower water cavity, and the lower heat conduction cavity is communicated with the upper heat conduction cavity through a pipeline.

3. The civil methanol boiler as defined in claim 2, wherein: the side wall of the top of the lower water cavity is provided with at least two convection tubes, and the lower water cavity is communicated with the outer water jacket through the at least two convection tubes; the bottom of the upper water cavity is provided with a water inlet pipe communicated with the outer water jacket, and the top of the upper water cavity is provided with a water outlet pipe communicated with the outer water jacket.

4. The civil methanol boiler as defined in claim 2, wherein: the lower heat conduction cavity is of a convex structure, and the bottom of the lower heat conduction cavity is attached to the bottom of the lower water cavity.

5. The domestic methanol boiler of claim 1, wherein said flue gas collection assembly comprises:

the umbrella-shaped cover plate is covered at the top end of the flue, and the top end of the umbrella-shaped cover plate is provided with an air hole;

and one end of the smoke pipeline is connected with the air hole, and the other end of the smoke pipeline is connected with the auxiliary heating pipe.

6. The domestic methanol boiler of claim 5, wherein: and the smoke pipeline is provided with a circulating air pump in series.

7. The domestic methanol boiler of claim 1, wherein: the external converter is internally provided with a fan, an air outlet of the fan is connected with an air outlet pipeline, and an air outlet of the air outlet pipeline is aligned with a combustion port of the combustor.

8. The domestic methanol boiler of claim 1, wherein: the conversion chamber is connected with a liquid level probe, and the detection end of the liquid level probe penetrates through the top wall of the conversion chamber and extends into the conversion chamber.

9. The domestic methanol boiler of claim 8, wherein: the conversion chamber is also connected with a fuel pump which is used for pumping fuel from a methanol storage tank to the conversion chamber.

10. A domestic methanol boiler as claimed in any one of claims 1 to 9, wherein: the top of the conversion chamber is provided with a safety valve communicated with the interior of the conversion chamber, and the exhaust pipe is provided with a stop valve in series.